another pesky rejet question

[sansal10]

I have a 79 kz400 want to run open exhaust and pod filters just seeing if anyone has had this bike with this setup and what jets did it take to get it running well

 

[Bonehead]

First, pull the carbs and see what jets you have to begin with.


1 jet size for custom 4 into 2 exhaust

2 jet sizes for 4 into 1 exhaust

1 jet size for K&N filter (single inside airbox)

1 jet size for drilling out the bottom of the airbox

3 jet sizes for individual filters

2 jet sizes for no muffler (open header)

1 pilot jet size for every 3 main jet size increase

Add up all the jet size increases and subtract one. (They go in steps of 2.5 for each jet size)


Or, you could just get a wideband o2 sensor and tune it accordingly.